Hail history for Crook County, WY

Crook County has 504 recorded hail events in the NOAA Storm Events Database — 387 of them 1″ or larger and 46 at 2″ or larger. The largest on record: 4.25″ (grapefruit) on July 13, 2009.

Records 1950–present Data through April 2026 Peak month July

Core sample · every recorded event, 1955–2026

Mark size = measured hail diameter; slivers are events with no recorded size. Amber ≥2″, red ≥2.75″ (baseball class). Denser recent decades partly reflect better reporting, not only more storms.

Recorded events 504 since 1956

1″ or larger 387 NWS severe threshold

2″ or larger 46 hen egg class and up

Largest recorded 4.25″ grapefruit · July 13, 2009

Read the record honestly: Storm Events contains what was reported to the National Weather Service. Sparse or rural counties under-report, and coverage improved sharply after the mid-1990s — a quiet-looking stretch is not proof nothing fell.

When it hails in Crook County

Recorded events by month, 1950–present. The amber bar marks Crook County's peak: July.

Most recent recorded events

Latest 8 of 504 recorded events · data through April 2026
Date	Size	Comparable to
August 26, 2024	1.0″	Quarter
August 19, 2024	1.5″	Ping-pong ball
August 19, 2024	2.75″	Baseball
August 19, 2024	1.5″	Ping-pong ball
July 28, 2024	0.75″	Penny
July 28, 2024	1.0″	Quarter
June 17, 2024	1.25″	Half dollar
June 10, 2024	1.0″	Quarter

Looking for a specific storm? Use the did-it-hail date lookup for Crook County.

From the storm reports

Narratives as filed with the NOAA Storm Events Database (public records; lightly trimmed for length).

May 27, 2023 · 1.0″ (quarter)

Mostly marble size hail, with a few stones the size of quarters, covered the ground.

July 13, 2009 · 4.25″ (grapefruit)

Softball sized hail damaged automobiles and buildings.

July 13, 2009 · 4.25″ (grapefruit)

Softball sized hail broke windows and damaged roofs and automobiles.

Events by decade

1950s	1960s	1970s	1980s	1990s	2000s	2010s	2020s
2	2	1	16	31	164	192	96

The climb across decades is largely a reporting story: spotter networks, radar, and digital filing pulled far more storms into the record after the 1990s.

Questions about hail in Crook County

Has it ever hailed in Crook County?

Yes — 504 hail events have been recorded for Crook County, WY in the NOAA Storm Events Database since 1956, including 387 of 1″ (quarter size) or larger.

When did it last hail in Crook County?

The most recent recorded hail event for Crook County, WY is August 26, 2024, with 1.0″ (quarter) hail. The database is currently updated through April 2026, so a storm from the last few weeks may not appear yet. To check a specific day, use the did-it-hail date lookup.

What is the largest hail ever recorded in Crook County?

4.25″ (grapefruit), recorded on July 13, 2009. Hail that size is destructive-class and typically damages roofs, vehicles, and siding. See how big that really is on the actual-size hail chart.

Does a recorded hail event mean my roof was damaged?

No. This page reports storm records, not damage. Hail size and damage vary block by block within a county, and only an inspection can establish what happened to a specific roof. If you suspect damage, talk to your insurer or a licensed roofer — they can pull the same NOAA records for your claim.

More Wyoming hail history

All 23 Wyoming counties, ranked by recorded hail →

Source: NOAA/NCEI Storm Events Database, public domain, updated monthly by NCEI — this site's copy runs through April 2026. HailHistory reports records; it does not give insurance advice or assess damage.